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JPS58138493

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DESCRIPTION JPS58138493
[0001]
Brief description of the drawings
[0002]
Figure 1, Figure 2 is a view in principle circuit diagram for explaining the conventional device
shows the frequency characteristic curve, Figure 3, Figure 4 is a first embodiment of the sound
quality variator of the loudspeaker of the present invention rear view and Takako longitudinal
sectional view an example, FIG. 5 'is electrically equivalent circuit diagram of a first embodiment,
FIG. 6 a, B is a view showing a frequency characteristic curve of the first embodiment, FIG. 7, the
8 Figure is a rear view and vertical sectional view showing a second embodiment of the present
invention, Figure 9, Figure 10, Figure 11 is a longitudinal sectional view showing a third
embodiment of the present invention, a rear view and cross-sectional view it is. Note Among
symbols used in FIG. 3, ...... driver unit, 5A ...... space, 6 ...... passive vibrating membrane, 7 ...... tone
it is a control tool.
12-05-2019
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